| 3847061 | Composite, with 1 known prime factor. Cofactor is composite. Trial Factored to 271 TF target 264 |
| Factored | |
| ECM | | Digits | B1 | Curves |
|---|
| 25 | 50000 | 280 / 280 | | 30 | 250000 | 70 / 640 |
Estimated T-Level: 25.5 ⓘ TF below 2^80 is very unlikely to find new factors due to ECM effort. |
| LL | | Status | Date | User | Residue | Shift | Software |
|---|
| Factored | | David A McGough | 61FB86CF1ADC52E9 | 0 | Windows,Prime95,v14,(aka WQ1) | | Factored | 2000-05-05 | Ken Miller | 61FB86CF1ADC52E9 | 1975031 | Linux 32-bit,Prime95,v19,(aka WV2) |
|
| PRP Cofactor | | Status | Proof | Date | User | Residue | Number of
known factors | Shift | Type | Base |
|---|
| Verified | Certified Good | 2025-03-26 | fordobr | AC337F0CF0BDE54B | 1 | 2725867 | 5 | 3 |
|
| History | | Date | User | Type | Result |
|---|
| 2025-03-26 | Shadwick76 | CERT | Proof certified good | | 2025-03-26 | fordobr | C-PRP | M3847061/2824509273706091710665085394783 : AC337F0CF0BDE54B Proof Certified Good
Proof Power: 7
| | 2025-03-26 | fordobr | F-ECM | Factor: 2824509273706091710665085394783 / ECM curve 48, B1=113590, B2=275660385, Edwards Sigma=4830881332231360 | | 2025-03-06 | TJAOI | NF | no factor TF: 70-71 | | 2025-02-21 | Joss | NF-PM1 | B1=11529390, B2=20295835560 | | 2025-02-18 | Joss | NF-PM1 | B1=11529390, B2=10125046470 | | 2024-04-23 | Joss | NF-PM1 | B1=10000000, B2=10002782790 | | 2023-12-14 | Joss | NF-PM1 | B1=2322459, B2=2389066680 | | 2022-05-17 | DRobinsonPE | NF | no factor TF: 69-70 | | 2021-02-10 | axn | NF-PM1 | B1=15000000, B2=750000000 | | 2020-09-07 | TJAOI | NF | no factor TF: 68-69 | | 2018-07-23 | TJAOI | NF | no factor TF: 67-68 | | 2016-11-21 | Gordon Spence | NF | no factor TF: 66-67 | | 2016-03-07 | ramgeis | NF | no factor TF: 65-66 | | 2016-02-23 | Mark Rose | NF | no factor TF: 62-63 | | 2015-03-25 | David Campeau | NF-PM1 | B1=1200000, B2=34800000, E=12 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 64-65 | | 2015-01-18 | VictordeHollander | NF | no factor TF: 63-64 | | 2014-10-18 | Joss | NF-PM1 | B1=86684 | | 2012-02-20 | GrunwalderGIMP | NF | no factor TF: 1-63 | | 2011-10-24 | Squeeky_Squirrel | NF-PM1 | B1=70000, B2=1137500, E=6 | | 2011-03-03 | markr | NF | no factor TF: 61-62 | | 2009-07-27 | Carsten Kossendey | NF-PM1 | B1=20000, B2=270000 | | 2009-02-23 | S485122 | NF | no factor TF: 60-61 | | 2000-05-05 | -anonymous- | C-LL | 61FB86CF1ADC52E9 | | 1999-01-10 | -anonymous- | NF | no factor TF: 1-60 |
|
